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The effect of high and low planes of nutrition on the haematology of monozygous twin calves

Published online by Cambridge University Press:  27 March 2009

W. A. Greig  and
A. W. Boynea
W. A. Greig
Affiliation:
Rowelt Research Institute, Bucksburn, Aberdeenshire
A. W. Boynea
Affiliation:
Rowelt Research Institute, Bucksburn, Aberdeenshire
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Extract

1. In an experiment conducted with eight pairs of monozygous twin heifer calves aged from 7 to 9 months, it was shown that the mean haemoglobin concentration of those reared on a high plane of nutrition was higher than the corresponding value of those reared on low-plane rations.

2. The relative anaemia of the low-plane animals was microcytic but normochromic in type. Its cause must await further investigation, but these features would not be inconsistent with a deficiency of iron.

3. For this type of haematological study, monozygous twins proved more efficient than unrelated animals, as shown by the smaller variability within than between pairs.

4. Day-to-day variation in the same animal must be considered an important possible source of sampling error.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 47 , Issue 2 , April 1956 , pp. 150 - 153
Copyright
Copyright © Cambridge University Press 1956

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References

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